A collection device for preparing high-purity silicon powder

Abstract

The application relates to a collecting device for preparing high-purity silicon powder, which comprises a shell, a magnetic suction cavity is formed in the inside of the shell, a distribution cylinder is arranged on the inner top wall of the magnetic suction cavity, a communication channel is formed in the inner top wall of the magnetic suction cavity, the communication channel is communicated with the inside channel of the distribution cylinder, and the bottom of the inside channel of the distribution cylinder is expanded. Through the use of the collecting assembly, the distribution plate separates the cavities in the feeding cavity, a plurality of closed cavities are generated, the air pressure change generated in the collecting raw material process cannot affect the inner cavity of the magnetic suction cavity, the airflow cannot reach the inside of the distribution cylinder through the feeding cavity, and the generation of the airflow blowing the surface of the magnetic separation roller to make the adsorbed impurities fall off is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of high-purity silicon powder collection, and particularly relates to a collection device for preparing high-purity silicon powder. BACKGROUND

[0002] The step of preparing high-purity silicon powder includes forming raw material particles by mechanically crushing natural quartz or quartzite to expose internal impurities, facilitating the removal of metal oxides and other pollutants in the subsequent purification process, and the use of a magnetic separation device is required to remove residual trace metals and metal oxide impurities to improve the purity of the powder. The existing device has the characteristics of “simple and easy to maintain, and strong universality”, but it still has some shortcomings, such as low automation level, some steps need human intervention, and the magnetic field generating mechanism is generally a permanent magnet, resulting in poor controllability of the magnetic field, thereby making it difficult to flexibly control the release and removal of impurities. Therefore, a collection device for preparing high-purity silicon powder is proposed. SUMMARY

[0003] This section aims to summarize some aspects of the embodiments of the application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the application.

[0004] In view of the following technical problems in the prior art: low automation level, some steps need human intervention, and the magnetic field generating mechanism is generally a permanent magnet, resulting in poor controllability of the magnetic field, thereby making it difficult to flexibly control the release and removal of impurities.

[0005] To solve the above technical problems, the application provides the following technical scheme: a collection device for preparing high-purity silicon powder, comprising a shell, a magnetic suction cavity is formed in the inside of the shell, a distribution cylinder is arranged on the inner top wall of the magnetic suction cavity, a communication channel is formed in the inner top wall of the magnetic suction cavity, the communication channel is connected with the inner channel of the distribution cylinder, the bottom of the inner channel of the distribution cylinder is expanded, a magnetic separation roller is rotatably connected to the middle part of the magnetic suction cavity, the opening at the bottom end of the inner channel of the distribution cylinder faces the magnetic separation roller, a material blocking plate is rotatably connected to the top of one side of the magnetic suction cavity, the bottom of the magnetic suction cavity is formed into a distribution cavity, an impurity separation cavity and a water washing cavity, and a magnetic field generating mechanism is arranged in the inside of the magnetic separation roller; the distribution cavity and the impurity separation cavity are located below the magnetic separation roller, a material collecting assembly is arranged at the top end of the shell, and a air drying cavity is arranged on the other side of the magnetic suction cavity.

[0006] As a preferred technical scheme of the collecting device for preparing high-purity silicon powder, the collecting assembly comprises a material suction table, one side of the material suction table is connected with a material suction disc through a feeding pipe, an inlet cavity is concavely arranged in the material suction table, the top of one side of the inlet cavity is connected with the feeding pipe, the top of the other side of the inlet cavity is provided with a filter screen, the filter screen is connected with a connecting pipeline, the bottom end of the inlet cavity is concavely arranged with a material leakage hole, and the material leakage hole is connected with a communication channel;

[0007] The material inlet cavity is divided into multiple closed cavities by the material distribution plate, so that the air pressure change generated in the collecting raw material process does not affect the inner cavity of the magnetic suction cavity, the airflow cannot reach the material distribution cylinder through the material inlet cavity, and the surface of the magnetic separation roller is avoided from being blown by the airflow to make the adsorbed impurities fall off.

[0008] As a preferred technical scheme of the collecting device for preparing high-purity silicon powder, the bottom of the internal passage of the material distribution cylinder is provided with a material guide bulge, the material guide bulge has a structure of being convex upward and flat downward, and is similar to the shape of an airplane wing.

[0009] The raw material particles are thrown and thrown by the material guide bulge, so that the raw material particles are dispersed in the expanded part of the material distribution cylinder.

[0010] As a preferred technical scheme of the collecting device for preparing high-purity silicon powder, the internal passage of the material distribution cylinder is rotatably connected with a material distribution arc plate at a position below the material guide bulge, and the material distribution arc plate has a curved knife shape.

[0011] The material distribution arc plate divides the thrown and thrown raw material particles to make the raw material particles move to positions farther away from the middle part of the shell, so that the raw material particles are more uniformly dispersed to the top of the outer circle of the magnetic separation roller, the impurities in the raw material particles are fully exposed, the impurities in the raw material particles are more fully contacted with the outer circle of the magnetic separation roller, so as to be adsorbed by the magnetic separation roller, so that the material distribution cylinder and the magnetic separation roller can process more raw material particles per unit time, thereby greatly improving the work efficiency.

[0012] As a preferred technical scheme of the collecting device for preparing high-purity silicon powder, the water washing cavity is a space separated by the first material scraping plate, the second material scraping plate and the magnetic separation roller, the first material scraping plate and the second material scraping plate are movably connected with the magnetic separation roller, and the first material scraping plate and the second material scraping plate are made of rubber.

[0013] The second material scraping plate continues to scrape the surface of the magnetic separation roller, and blocks the water liquid to prevent the water liquid from flowing out of the inner cavity of the water washing cavity through the second material scraping plate and the magnetic separation roller.

[0014] As a preferred technical scheme of the collecting device for preparing high-purity silicon powder, the water washing cavity is provided with a flushing spray head at the top, and the flushing spray head is tangent to the magnetic separation roller.

[0015] The magnetic roller continues to rotate to the position corresponding to the water washing cavity, and the flushing nozzle sprays water to flush the surface of the magnetic roller, so that the impurities on the surface of the magnetic roller are flushed away.

[0016] As a preferred technical solution of the collecting device for preparing high-purity silicon powder, the bottom end of the outer side of the distributing cylinder is provided with a gas jet head, the direction of the gas jet head is tangent to the magnetic roller, a gas pipe is arranged on the gas jet head, and the gas pipe extends out of the shell from the inside of the magnetic attraction cavity.

[0017] The gas pipe is connected to the air pump.

[0018] As a preferred technical solution of the collecting device for preparing high-purity silicon powder, the top of the impurity separation cavity is rotatably connected with a circulating water suction wheel, and the circulating water suction wheel is movably connected with the outer periphery of the magnetic roller.

[0019] The capillary water suction rod on the circulating water suction wheel absorbs water, the water suction cavity contains water, the water suction channel guides the water to the circulating water suction wheel for absorption, and the water flowing on the surface enters the distributing cavity through the magnetic attraction layer along the outer ring of the magnetic roller, thereby causing pollution.

[0020] As a preferred technical solution of the collecting device for preparing high-purity silicon powder, the lower part of the circulating water suction wheel is provided with an extrusion seat, the second central shaft is arranged in the middle part of the circulating water suction wheel, the circulating water suction wheel is rotatably connected with the impurity separation cavity, the extrusion seat is in the shape of a “7”, a drainage channel is concavely arranged in the inside of the extrusion seat, and the drainage channel extends upward and downward.

[0021] The extrusion seat extrudes the circulating water suction wheel to release the water, so that the circulating water suction wheel has the ability to absorb water again, and the drainage channel drains the water.

[0022] As a preferred technical solution of the collecting device for preparing high-purity silicon powder, the outer ring of the circulating water suction wheel is provided with a ring of capillary water suction rods, the capillary water suction rods form a capillary water suction layer, the capillary water suction rods are extruded with each other, and the material of the circulating water suction wheel is sponge; the capillary water suction rods are composed of long fibers, the top of the capillary water suction rod is provided with a water suction cavity, the lower side of the capillary water suction rod located in the water suction cavity is provided with a water suction channel, the inside of the water suction channel is provided with an oval cavity, and the top of the capillary water suction rod is in the shape of a circular truncated cone.

[0023] The material of the magnetic attraction layer is ceramic or soft magnetic material, the connecting pipeline is connected to the air suction pump, and the air suction pump generates suction force through the connecting pipeline, the feeding cavity and the feeding pipe on the feeding disc.

[0024] As a preferred technical solution of the collecting device for preparing high-purity silicon powder, the top end of the air drying cavity corresponds to the second scraping plate.

[0025] As a preferred technical scheme of the collecting device for preparing high-purity silicon powder, one end of the connecting pipeline is provided with an air suction pump, the inner side of the material suction table is recessed with a material inlet cavity, the inner side of the material inlet cavity is rotationally connected with a central shaft one, the outer periphery of the central shaft one is annularly arranged with six material distribution plates, the material distribution plates are fan-shaped, the outer ring of the material distribution plates is provided with an elastic sealing frame, and the elastic sealing frame is made of rubber;

[0026] The end of the material distribution plate away from the central shaft one is movably connected with the inner wall of the material inlet cavity.

[0027] As a preferred technical scheme of the collecting device for preparing high-purity silicon powder, one end of the electromagnet is electrically connected with the conductive ring one, the other end of the electromagnet is electrically connected with the graphite head, the graphite head is slidably connected with the conductive ring two, the conductive ring two is connected with the power supply, and the conductive ring one is connected with the power supply.

[0028] As a preferred technical scheme of the collecting device for preparing high-purity silicon powder, the magnetic field generating mechanism comprises a magnetic attraction layer, a partition plate, a magnetic shielding cylinder one, a magnetic shielding cylinder two, a central shaft three, a graphite head, an electromagnet and a conductive ring one, the inside of the magnetic separation roller is annularly arranged with the electromagnet, the magnetic shielding cylinder one is annularly arranged in the inside of the magnetic separation roller, the outer ring of the magnetic separation roller is uniformly arranged with a plurality of magnetic attraction layers, and the magnetic attraction layers correspond to the electromagnets;

[0029] The conductive ring two is a notched circular ring, and the magnetic attraction layers are separated by the partition plate;

[0030] One end of the magnetic shielding cylinder one is connected with the magnetic shielding cylinder two, the magnetic shielding cylinder two and the magnetic shielding cylinder one form a cavity with a notch, and the magnetic shielding cylinder one and the magnetic shielding cylinder two are both made of shielding material.

[0031] The collecting device for preparing high-purity silicon powder has the following advantages: through the use of the material collecting assembly, the cavity of the material inlet cavity is separated by the material distribution plate, a plurality of closed cavities are generated, the air pressure change generated in the raw material collecting process does not affect the inner cavity of the magnetic attraction cavity, the airflow cannot pass through the material inlet cavity to reach the inside of the material distribution cylinder, and the generation of airflow blowing the surface of the magnetic separation roller to make the adsorbed impurities fall off is avoided;

[0032] The raw material particles flowing through the internal channel of the material distribution cylinder are thrown by the flow guide of the material guide bulge, so that the raw material particles are dispersed in the expanded part of the material distribution cylinder, the raw material particles are divided by the material distribution arc plate to make the raw material particles move to a position farther away from the middle of the shell, so that the raw material particles are more uniformly dispersed to the top of the outer ring of the magnetic separation roller, the impurities in the raw material particles are fully exposed, the impurities in the raw material particles are more fully contacted with the outer ring of the magnetic separation roller, so that the raw material particles are adsorbed by the magnetic separation roller, the material distribution cylinder and the magnetic separation roller can process more raw material particles per unit time, and the working efficiency is greatly improved;

[0033] Through the use of the graphite head and the conductive ring two, the electromagnet generates a magnetic field to adsorb impurities at a specific position or cancels the magnetic field to release the impurities at a specific position, the magnetic separation roller reacquires the ability of high-efficiency absorption of impurities, and the whole process is highly automated. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0035] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0036] Figure 2 It is a schematic diagram of the internal structure of the suction table of the present application Figure 1 ;

[0037] Figure 3 It is a schematic diagram of the internal structure of the suction table of the present application Figure 2 ;

[0038] Figure 4 It is a schematic diagram of the internal structure of the circulating water suction wheel of the present application;

[0039] Figure 5 It is a schematic diagram of the internal structure of the capillary water suction rod of the present application;

[0040] Figure 6 It is a schematic diagram of the local enlarged structure of part A in the present application Figure 1 ;

[0041] Figure 7 It is a schematic diagram of the local enlarged structure of part B in the present application Figure 1 ;

[0042] Figure 8 It is a schematic diagram of the local enlarged structure of part C in the present application Figure 1 ;

[0043] Figure 9 It is a schematic diagram of the connection structure of the conductive ring two and the graphite head of the present application;

[0044] Figure 10 It is a schematic diagram of the circuit structure of the graphite head of the present application.

[0045] 1, shell; 2, magnetic suction cavity; 3, material distribution cavity; 4, circulating water suction wheel; 5, impurity separation cavity; 6, water washing cavity; 7, material scraping plate one; 8, material scraping plate two; 9, air drying cavity; 10, magnetic separation roller; 11, material distribution cylinder; 12, material suction table; 13, material inlet cavity; 14, central shaft one; 15, material distribution plate; 16, filter screen; 17, elastic sealing frame; 18, feed pipe; 19, flushing nozzle; 20, air jet head; 21, connecting pipeline; 22, capillary water suction rod; 23, central shaft two; 24, communication channel; 25, water suction cavity; 26, water suction channel; 27, magnetic suction layer; 28, partition plate; 29, magnetic shielding cylinder one; 30, magnetic shielding cylinder two; 31, central shaft three; 32, graphite head; 33, graphite head; 34, material distribution arc plate; 35, material guide bulge; 36, extrusion seat; 37, drainage channel; 38, material suction disc; 39, electrically conductive ring one; 40, electrically conductive ring two; 41, material blocking plate. DETAILED DESCRIPTION

[0046] To make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0047] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0048] Secondly, "one embodiment" or "embodiment" referred to herein means that a specific feature, structure or characteristic can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is separate or alternative to other embodiments.

[0049] Thirdly, the present application is described in detail in conjunction with the schematic diagram, and in the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without general proportion for the convenience of description, and the schematic diagram is only an example, which should not limit the scope of protection of the present application. In addition, three-dimensional spatial dimensions including length, width and depth should be included in actual manufacture.

[0050] As Figures 1-8As shown, the present application provides a collection device for preparing high-purity silicon powder, comprising a shell 1, a magnetic suction cavity 2 is opened in the inside of the shell 1, a distribution cylinder 11 is arranged on the inner top wall of the magnetic suction cavity 2, a communication channel 24 is opened on the inner top wall of the magnetic suction cavity 2, the communication channel 24 is communicated with the inside channel of the distribution cylinder 11, the bottom of the inside channel of the distribution cylinder 11 is expanded, a magnetic separation roller 10 is rotatably connected to the middle part of the magnetic suction cavity 2, the opening of the bottom end of the inside channel of the distribution cylinder 11 is towards the magnetic separation roller 10, a material blocking plate 41 is rotatably connected to the top of one side of the magnetic suction cavity 2, the bottom of the magnetic suction cavity 2 is formed into a distribution cavity 3, an impurity separation cavity 5 and a water washing cavity 6, a magnetic field generating mechanism is arranged in the inside of the magnetic separation roller 10; the distribution cavity 3 and the impurity separation cavity 5 are below the magnetic separation roller 10, a material collecting assembly is arranged on the top end of the shell 1, and a air drying cavity 9 is arranged on the other side of the magnetic suction cavity 2.

[0051] The material collecting assembly comprises a material suction table 12, a material suction disc 38 is connected to one side of the material suction table 12 through a feeding pipe 18, a feeding cavity 13 is concavely arranged in the inside of the material suction table 12, the top of one side of the feeding cavity 13 is communicated with the feeding pipe 18, a filter screen 16 is arranged on the top of the other side of the feeding cavity 13, the filter screen 16 is connected with a connecting pipe 21, a leakage hole is concavely arranged on the bottom end of the feeding cavity 13, and the leakage hole is communicated with the communication channel 24.

[0052] The distribution plate 15 separates the cavities of the feeding cavity 13 to generate multiple closed cavities, so that the air pressure change generated in the process of collecting raw materials does not affect the inner cavity of the magnetic suction cavity 2, the airflow cannot pass through the feeding cavity 13 to reach the inside of the distribution cylinder 11, and the surface of the magnetic separation roller 10 is avoided from being blown by the airflow to make the adsorbed impurities fall off.

[0053] The bottom of the inside channel of the distribution cylinder 11 is provided with a material guiding bump 35, the material guiding bump 35 is an upper convex and lower flat structure, and is similar to the shape of an airplane wing.

[0054] The raw material particles are thrown by the material guiding bump 35, so that the raw material particles are dispersed in the expanded part of the distribution cylinder 11.

[0055] The inside channel of the distribution cylinder 11 is rotatably connected with a distribution arc plate 34 at a position below the material guiding bump 35, and the distribution arc plate 34 is in the shape of a curved knife.

[0056] The distribution arc plate 34 distributes the thrown raw material particles to make the raw material particles move to a position further away from the middle part of the shell 1, so that the raw material particles are more uniformly dispersed to the top of the outer circle of the magnetic separation roller 10, the impurities in the raw material particles are fully exposed, the impurities in the raw material particles are more fully contacted with the outer circle of the magnetic separation roller 10, so as to be adsorbed by the magnetic separation roller 10, so that the distribution cylinder 11 and the magnetic separation roller 10 can process more raw material particles per unit time, thereby greatly improving the work efficiency.

[0057] The water washing cavity 6 is separated by the scraper plate one 7, the scraper plate two 8 and the magnetic roller 10, the scraper plate one 7 and the scraper plate two 8 are movably connected with the magnetic roller 10, and the scraper plate one 7 and the scraper plate two 8 are made of rubber;

[0058] The scraper plate two 8 continues to scrape the surface of the magnetic roller 10 and blocks the water liquid to avoid the water liquid flowing out from the inner cavity of the water washing cavity 6 through the space between the scraper plate two 8 and the magnetic roller 10.

[0059] The top of the water washing cavity 6 is provided with a flushing nozzle 19, and the direction of the flushing nozzle 19 is tangent to the magnetic roller 10;

[0060] The magnetic roller 10 continues to rotate to the corresponding position of the water washing cavity 6, the flushing nozzle 19 sprays water liquid to flush the surface of the magnetic roller 10, so that the impurities on the surface of the magnetic roller 10 are flushed away.

[0061] The bottom end of the outer side of the material distribution cylinder 11 is provided with a gas jet head 20, the direction of the gas jet head 20 is tangent to the magnetic roller 10, the gas jet head 20 is provided with a gas pipe, and the gas pipe extends out of the shell 1 from the inside of the magnetic attraction cavity 2;

[0062] The gas pipe is connected with a gas pump.

[0063] The top of the impurity separation cavity 5 is rotatably connected with a circulating water suction wheel 4, and the circulating water suction wheel 4 is movably connected with the periphery of the magnetic roller 10;

[0064] The capillary water suction rod 22 on the circulating water suction wheel 4 absorbs water liquid, the water suction cavity 25 contains water liquid, the water suction channel 26 guides the water liquid to the circulating water suction wheel 4 for absorption, and the surface flowing water liquid enters the distribution cavity 3 through the magnetic attraction layer 27 along the outer ring of the magnetic roller 10 to cause pollution.

[0065] The lower part of the circulating water suction wheel 4 is provided with an extrusion seat 36, the center shaft two 23 is arranged in the middle part of the circulating water suction wheel 4, the circulating water suction wheel 4 is rotatably connected with the impurity separation cavity 5, the shape of the extrusion seat 36 is "7", the inside of the extrusion seat 36 is concavely provided with a drainage channel 37, and the drainage channel 37 extends upward and downward;

[0066] The extrusion seat 36 extrudes the circulating water suction wheel 4 to release the water liquid, so that the circulating water suction wheel 4 has the ability to absorb water liquid again, and the drainage channel 37 drains the water liquid.

[0067] The outer ring of the circulating water wheel 4 is provided with a circle of capillary water absorption rods 22, which constitute a capillary water absorption layer, and the capillary water absorption rods 22 are in mutual extrusion with the circulating water wheel 4, and the material of the circulating water wheel 4 is sponge; the capillary water absorption rods 22 are composed of fiber long hair, the top of the capillary water absorption rods 22 is provided with a water absorption cavity 25, the lower side of the capillary water absorption rods 22 located in the water absorption cavity 25 is provided with a water absorption channel 26, the inner side of the water absorption channel 26 is provided with an oval cavity, and the top of the capillary water absorption rods 22 is a circular truncated cone;

[0068] The material of the magnetic attraction layer 27 is ceramic or soft magnetic material, the connecting pipeline 21 is connected with the air suction pump, and the air suction pump generates suction force through the connecting pipeline 21, the material inlet cavity 13 and the feeding pipe 18 on the material suction disc 38.

[0069] The feeding pipe 18 corresponds to the filter screen 16.

[0070] The top end of the air drying cavity 9 corresponds to the material scraping plate two 8.

[0071] One end of the connecting pipeline 21 is provided with an air suction pump, the inner side of the material suction table 12 is concavely provided with a material inlet cavity 13, the inner side of the material inlet cavity 13 is rotatably connected with a central shaft one 14, the outer periphery of the central shaft one 14 is annularly arrayed with six material distribution plates 15, the material distribution plates 15 are fan-shaped, the outer ring of the material distribution plates 15 is provided with an elastic sealing frame 17, and the elastic sealing frame 17 is rubber;

[0072] One end of the material distribution plate 15 away from the central shaft one 14 is movably connected with the inner wall of the material inlet cavity 13.

[0073] One end of the electromagnet 33 is electrically connected with the conductive ring one 39, the other end of the electromagnet 33 is electrically connected with the graphite head 32, the graphite head 32 is slidably connected with the conductive ring two 40, the conductive ring two 40 is connected with the power supply, and the conductive ring one 39 is connected with the power supply.

[0074] The magnetic field generating mechanism comprises the magnetic attraction layer 27, the partition plate 28, the magnetic shielding cylinder one 29, the magnetic shielding cylinder two 30, the central shaft three 31, the graphite head 32, the electromagnet 33 and the conductive ring one 39, the inner side of the magnetic separation roller 10 is annularly arrayed with the electromagnet 33, the magnetic shielding cylinder one 29 is annularly distributed in the inner side of the magnetic separation roller 10, the outer ring of the magnetic separation roller 10 is uniformly arrayed with a plurality of magnetic attraction layers 27, and the magnetic attraction layers 27 correspond to the electromagnet 33;

[0075] The conductive ring two 40 is a notched ring, and the magnetic attraction layers 27 are separated by the partition plate 28;

[0076] The magnetic shielding cylinder 29 is connected with a magnetic shielding cylinder 30, and the magnetic shielding cylinder 29 and the magnetic shielding cylinder 30 form a cavity with a gap.

[0077] The embodiment is specific: the material suction disc 38 collects high-purity silicon raw material particles, the raw material particles enter the top of the feeding cavity 13 through the feeding pipe 18, the filter screen 16 traps the raw material particles, the raw material particles are left in the space above the central shaft 14 and between the distribution plates 15, the distribution plates 15 are used to separate the cavity of the feeding cavity 13 to form multiple closed cavities, so that the air pressure change generated in the raw material collecting process does not affect the inner cavity of the magnetic suction cavity 2, and the airflow cannot reach the inside of the distribution cylinder 11 through the feeding cavity 13, thereby avoiding the generation of airflow blowing the surface of the magnetic separation roller 10 to make the adsorbed impurities fall off; the motor is used to control the slow rotation of the distribution plate 15, the closed cavities at the top of the feeding cavity 13 trap the collected raw material particles, and as the distribution plate 15 slowly rotates, the closed cavities of the collected raw material particles rotate to the bottom of the feeding cavity 13, so that the raw material particles in the closed cavities at the bottom of the feeding cavity 13 reach the internal passage of the distribution cylinder 11 through the communication passage 24;

[0078] The raw material particles flowing in the internal passage of the distribution cylinder 11 are thrown by the guide drum 35, so that the raw material particles are dispersed in the bulging part of the distribution cylinder 11, the distribution arc plate 34 divides the thrown raw material particles to make the raw material particles move to a position farther away from the middle part of the shell 1, so that the raw material particles are more uniformly dispersed to the top of the outer circle of the magnetic separation roller 10, the impurities in the raw material particles are fully exposed, the impurities in the raw material particles are more fully contacted with the outer circle of the magnetic separation roller 10, so that the impurities are adsorbed by the magnetic separation roller 10, and the distribution cylinder 11 and the magnetic separation roller 10 can process more raw material particles per unit time, thereby greatly improving the work efficiency;

[0079] During the rotation of the magnetic separation roller 10, part of the graphite head 32 contacts the conductive ring 40, the electromagnet 33 where the graphite head 32 is located is connected to the circuit to be energized to generate a magnetic field, the magnetic field generated by the electromagnet 33 is used to adsorb the impurities in the raw material particles, when the part of the magnetic separation roller 10 rotates to the impurity separation cavity 5, the graphite head 32 on the electromagnet 33 of the part is separated from the conductive ring 40, the magnetic field of the electromagnet 33 of the part disappears, and the adsorbed impurities fall off under the action of gravity, and other impurities adhered to the magnetic adsorption layer 27 of the magnetic separation roller 10 are scraped off by the scraper plate 7;

[0080] The magnetic separation roller 10 continues to rotate to the position corresponding to the water washing cavity 6, the flushing nozzle 19 sprays water to flush the surface of the magnetic separation roller 10, so that the impurities on the surface of the magnetic separation roller 10 are flushed away, the second scraping plate 8 continues to scrape the surface of the magnetic separation roller 10, and blocks the water to prevent the water from flowing out of the inner cavity of the water washing cavity 6 through the second scraping plate 8 and the magnetic separation roller 10;

[0081] If part of the water passes through the first scraping plate 7, the water droplets sliding along the surface of the magnetic separation roller 10 will meet the circulating water suction wheel 4, the capillary water suction rod 22 on the circulating water suction wheel 4 absorbs the water, the water suction cavity 25 contains the water, and the water suction channel 26 guides the water to the circulating water suction wheel 4 for absorption. The surface flowing water enters the distribution cavity 3 through the magnetic attraction layer 27 along the outer circle of the magnetic separation roller 10, causing pollution;

[0082] The extrusion seat 36 extrudes the circulating water suction wheel 4 to release the water, so that the circulating water suction wheel 4 has the ability to absorb water again. The air jet head 20 generates airflow to the magnetic separation roller 10, which dries the surface of the magnetic separation roller 10, so that the magnetic separation roller 10 regains the ability to efficiently absorb impurities. The entire process is highly automated.

[0083] It should be understood that during the development of any actual implementation, numerous implementation-specific decisions can be made. Such development efforts, while possibly complex and time-consuming, would nevertheless be routine undertaking for those of ordinary skill in the art having the benefit of this disclosure, and would not require undue experimentation to generate.

[0084] It should be noted that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A collection apparatus for producing high purity silicon powder, characterized by: The utility model relates to a magnetic separation and washing device, including shell (1), the inside of shell (1) is opened with magnetic attraction chamber (2), the inner top wall of magnetic attraction chamber (2) is provided with and divides material cylinder (11), the inner top wall of magnetic attraction chamber (2) is opened with intercommunication channel (24), intercommunication channel (24) with the inside passage of dividing material cylinder (11) is connected, the inside passage of dividing material cylinder (11) bottom is swollen, the middle part rotation is connected with magnetic separation roller (10) in magnetic attraction chamber (2), and the opening of dividing material cylinder (11) inside passage bottom end is towards magnetic separation roller (10), the top rotation is connected with the material baffle (41) of one side of magnetic attraction chamber (2), and the bottom of magnetic attraction chamber (2) is formed into dividing material chamber (3), impurity separation chamber (5) and washing chamber (6), the inside of magnetic separation roller (10) is provided with magnetic field generating mechanism, dividing material chamber (3) and impurity separation chamber (5) are located below magnetic separation roller (10), and the top of shell (1) is provided with material collecting subassembly, and the other side of magnetic attraction chamber (2) is provided with air-drying chamber (9), one end of connecting pipeline (21) is provided with suction pump, and the inside recess of suction table (12) is formed into material inlet chamber (13), the inside rotation is connected with central shaft no.The aggregate assembly includes a suction table (12), one side of the suction table (12) is connected with a suction disc (38) through a feeding pipe (18), the inside of the suction table (12) is concave with a feeding cavity (13), the top of one side of the feeding cavity (13) is communicated with the feeding pipe (18), the top of the other side of the feeding cavity (13) is provided with a filter screen (16), the filter screen (16) is connected with a connecting pipe (21), the bottom end of the feeding cavity (13) is concave with a leakage hole, the leakage hole is communicated with a communication channel (24); the bottom of the inside passage of the distributing cylinder (11) is provided with a guide drum (35), the guide drum (35) is a structure of convex upward and flat downward, the shape of an airplane wing; the inside passage of the distributing cylinder (11) is rotatably connected with a distributing arc plate (34) below the guide drum (35), the distributing arc plate (34) is in the shape of a curved knife; the water washing cavity (6) is a space separated by a scraping plate one (7), a scraping plate two (8) and a magnetic roller (10), the scraping plate one (7) and the scraping plate two (8) are movably connected with the magnetic roller (10), the scraping plate one (7) and the scraping plate two (8) are made of rubber; the top of the impurity separation cavity (5) is rotatably connected with a circulating water suction wheel (4), the circulating water suction wheel (4) is movably connected with the periphery of the magnetic roller (10); the circulating water suction wheel (4) is provided below with a pressing seat (36), a center shaft two (23) is arranged in the middle of the circulating water suction wheel (4), the circulating water suction wheel (4) is rotatably connected with the impurity separation cavity (5), the shape of the pressing seat (36) is a "7" character, the inside of the pressing seat (36) is concave with a drainage channel (37), the drainage channel (37) is upward and downward.

2. The collection apparatus for preparing high purity silicon powder according to claim 1, wherein: The top of the water washing cavity (6) is provided with a flushing nozzle (19), and the direction of the flushing nozzle (19) is tangent to the magnetic separation roller (10).

3. The collection apparatus for preparing high purity silicon powder according to claim 1, wherein: The bottom end of the outer side of the distributing cylinder (11) is provided with a gas jet head (20), the direction of the gas jet head (20) is tangent to the magnetic separation roller (10), the gas jet head (20) is provided with an air pipe, and the air pipe extends out of the shell (1) from the inside of the magnetic attraction cavity (2).

4. The collection apparatus for preparing high-purity silicon powder according to claim 3, characterized in that: The outer ring of the circulating water suction wheel (4) is provided with a ring of capillary water suction rods (22), the capillary water suction rods (22) constitute a capillary water suction layer, the capillary water suction rods (22) are mutually extruded with the circulating water suction wheel (4), and the material of the circulating water suction wheel (4) is sponge; The capillary water suction rod (22) is composed of fiber long hair, the top of the capillary water suction rod (22) is provided with a water suction cavity (25), the lower side of the capillary water suction rod (22) located in the water suction cavity (25) is provided with a water suction channel (26), the inner side of the water suction channel (26) is provided with an oval cavity, and the top of the capillary water suction rod (22) is a circular truncated cone; The material of the magnetic attraction layer (27) is ceramic or soft magnetic material, the connecting pipeline (21) is connected with a suction pump, and the suction pump generates suction force on the material suction disc (38) through the connecting pipeline (21), the material inlet cavity (13) and the material inlet pipe (18).

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